Main frame for MP3 player



FIG. 1 is a front, right and top perspective view of a frame for MP3 player showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a front, right and top perspective view thereof, shown in its environmental use.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

We claim the ornamental design for main frame for MP3 player, as shown and described. 